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Longitudinal changes in maternal soluble endoglin and angiopoietin-2 in women at risk of preeclampsia.
Khalil A, Maiz N, Garcia-Mandujano R, ElKhouli M, Nicolaides KH.
Ultrasound Obstet Gynecol 2014;44:402-10. pdf -
Some thoughts on the true value of ultrasound.
Nicolaides KH.
Ultrasound Obstet Gynecol 2007;30:671-4.